xref: /third_party/skia/docs/examples/Pixmap_writable_addr64.cpp
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1cb93a386Sopenharmony_ci// Copyright 2019 Google LLC.
2cb93a386Sopenharmony_ci// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3cb93a386Sopenharmony_ci#include "tools/fiddle/examples.h"
4cb93a386Sopenharmony_ci// HASH=de14d8d30e4a7b6462103d0e0dd96b0b
5cb93a386Sopenharmony_ciREG_FIDDLE(Pixmap_writable_addr64, 256, 40, false, 0) {
6cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) {
7cb93a386Sopenharmony_ci    SkImageInfo info = SkImageInfo::Make(3, 3, kRGBA_F16_SkColorType, kPremul_SkAlphaType);
8cb93a386Sopenharmony_ci    uint64_t storage[9];
9cb93a386Sopenharmony_ci    SkPixmap pixmap(info, storage, 3 * sizeof(uint64_t));
10cb93a386Sopenharmony_ci    SkColor4f c4 { 1, 0.45f, 0.25f, 0.65f };
11cb93a386Sopenharmony_ci    pixmap.erase(c4);
12cb93a386Sopenharmony_ci    SkBitmap bitmap;
13cb93a386Sopenharmony_ci    canvas->scale(10, 10);
14cb93a386Sopenharmony_ci    bitmap.installPixels(pixmap);
15cb93a386Sopenharmony_ci    canvas->drawImage(bitmap.asImage(), 0, 0);
16cb93a386Sopenharmony_ci    *pixmap.writable_addr64(1, 1) |= 0x00ff000000000000LL;
17cb93a386Sopenharmony_ci    bitmap.installPixels(pixmap);
18cb93a386Sopenharmony_ci    canvas->drawImage(bitmap.asImage(), 10, 0);
19cb93a386Sopenharmony_ci}
20cb93a386Sopenharmony_ci}  // END FIDDLE
21

Indexes created Thu Nov 07 10:32:03 CST 2024